Kate Winslet's ex-husband, Sam Mendes, is going public with the new lady in his life. A spokesman for the director, 46, confirmed to the Daily Mail Sunday that Mendes and actress Rebecca Hall, 29, "are in a relationship."

In 2010, unconfirmed rumors swirled that Hall was responsible for the decline of Mendes and Winslet's seven-year marriage. The Daily Mail claimed that Mendes and the "Vicky Cristina Barcelona" star became romantically involved after meeting in 2006.

A rep for Mendes called the charge "utter nonsense ... untrue and ridiculous."

Sources have told Us Weekly that it wasn't infidelity but career-related issues that caused Winslet, 36, and Mendes' marriage to unravel. The duo are parents to a 7-year-old son, Joe; Winslet also has an 11-year-old daughter, Mia, with ex-hubby Jim Threapleton.